补全对话
A：Do you know Maria , Grace ?
B: Yes , she is one of my best friends .
A: I want to make friends with her , too. 1
B: Certainly ! Her birthday is coming . We can meet her at her birthday party.
A : 2
B: It’s on April 18 . Are you free, then ?
A: I think so. 3
B: At her house . Would you like to go with me ?
A: Yes , I’d love to. 4
B: How about a scarf ? I think she needs one.
A: 5 . Let’s go and buy one for her.
